1 files changed, 93 insertions, 0 deletions
diff --git a/xbmc/windowing/tvos/VideoSyncTVos.cpp b/xbmc/windowing/tvos/VideoSyncTVos.cpp
new file mode 100644
index 0000000000..eee802645c
--- /dev/null
+++ b/xbmc/windowing/tvos/VideoSyncTVos.cpp
@@ -0,0 +1,93 @@
+/*
+ *  Copyright (C) 2015-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "VideoSyncTVos.h"
+
+#include "cores/VideoPlayer/VideoReferenceClock.h"
+#include "utils/MathUtils.h"
+#include "utils/TimeUtils.h"
+#include "utils/log.h"
+#include "windowing/GraphicContext.h"
+#import "windowing/tvos/WinSystemTVOS.h"
+
+bool CVideoSyncTVos::Setup(PUPDATECLOCK func)
+{
+  CLog::Log(LOGDEBUG, "CVideoSyncTVos::{} setting up TVOS", __FUNCTION__);
+
+  //init the vblank timestamp
+  m_LastVBlankTime = CurrentHostCounter();
+  UpdateClock = func;
+  m_abortEvent.Reset();
+
+  bool setupOk = InitDisplayLink();
+  if (setupOk)
+  {
+    m_winSystem.Register(this);
+  }
+
+  return setupOk;
+}
+
+void CVideoSyncTVos::Run(CEvent& stopEvent)
+{
+  //because cocoa has a vblank callback, we just keep sleeping until we're asked to stop the thread
+  XbmcThreads::CEventGroup waitGroup{&stopEvent, &m_abortEvent};
+  waitGroup.wait();
+}
+
+void CVideoSyncTVos::Cleanup()
+{
+  CLog::Log(LOGDEBUG, "CVideoSyncTVos::{} cleaning up TVOS", __FUNCTION__);
+  DeinitDisplayLink();
+  m_winSystem.Unregister(this);
+}
+
+float CVideoSyncTVos::GetFps()
+{
+  m_fps = CServiceBroker::GetWinSystem()->GetGfxContext().GetFPS();
+  CLog::Log(LOGDEBUG, "CVideoSyncTVos::{} Detected refreshrate: {} hertz", __FUNCTION__, m_fps);
+  return m_fps;
+}
+
+void CVideoSyncTVos::OnResetDisplay()
+{
+  m_abortEvent.Set();
+}
+
+void CVideoSyncTVos::TVosVblankHandler()
+{
+  int64_t nowtime = CurrentHostCounter();
+
+  //calculate how many vblanks happened
+  double VBlankTime =
+      static_cast<double>(nowtime - m_LastVBlankTime) / static_cast<double>(CurrentHostFrequency());
+  int NrVBlanks = MathUtils::round_int(VBlankTime * m_fps);
+
+  //save the timestamp of this vblank so we can calculate how many happened next time
+  m_LastVBlankTime = nowtime;
+
+  //update the vblank timestamp, update the clock and send a signal that we got a vblank
+  UpdateClock(NrVBlanks, nowtime, m_refClock);
+}
+
+bool CVideoSyncTVos::InitDisplayLink()
+{
+  bool ret = true;
+  CLog::Log(LOGDEBUG, "CVideoSyncTVos: setting up displaylink");
+  if (!m_winSystem.InitDisplayLink(this))
+  {
+    CLog::Log(LOGDEBUG, "CVideoSyncTVos: InitDisplayLink failed");
+    ret = false;
+  }
+  return ret;
+}
+
+void CVideoSyncTVos::DeinitDisplayLink()
+{
+  m_winSystem.DeinitDisplayLink();
+}